Point-contact sensors: New prospects for a nanoscale-sensitive technique G. V. Kamarchuk, A. P. Pospelov, A. V. Yeremenko, E. C. Faulques and I. K. Yanson Europhys. Lett., 76 4 (2006) 575-581 Published online: 18 October 2006 DOI: 10.1209/epl/i2006-10303-6